Quote:
Originally Posted by doughboy
Yes, EC approved, not race.
Yes secondary CATs in place of OPF. This means 2 things for the UK:
1. I can remove primary CATs in future and still pass UK emissions test.
2. Secondary CATs will pass "visual check" that an OPF is still in place at annual test (MOT)
These CATs are 200 Cell hi flow cats with very little restriction compared to OPF.
They also will keep the noise down when I remove primary cats soon.
Remember before OPF the S55 had secondary CATs anyway..
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So am I right in saying you have the Milltek backbox, you have then replaced the OPFs with a set of secondary cats (which I assume the M2C does not have as standard due to OPF).
OPF have been replaced with 200cel sport cats?
I had the secondary cat bypass fitted to my M4 CP bit i assume doing this to the M2C will run a higher chance of the CEL throwing up and potentially limp mode.
Apologies for the questions as I'm just trying to ascertain which way I'll go with the Milltek.
Preferably I'd have the same set-up as my M4 with the Race system, OPF bypass and primary cats in place meantime. That will likely mean coding to disable the OPF sensors.